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drm/amd/display: add functionality to grab DPRX CRC entries.

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[Why]
We need to compare DPRX CRCs with framebuffer CRCs for digital bypass mode.

[How]
Hook into DRM to grab DP receiver CRCs through drm_dp_start_crc.

Signed-off-by: Dingchen Zhang <dingchen.zhang@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dingchen Zhang
2019-05-15 17:15:05 -04:00
committed by Alex Deucher
parent 2425347697
commit 14b2584636
4 changed files with 136 additions and 44 deletions
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16
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -50,6 +50,7 @@
#include "irq_types.h"
#include "signal_types.h"
#include "amdgpu_dm_crc.h"
/* Forward declarations */
struct amdgpu_device;
@@ -313,7 +314,7 @@ struct dm_crtc_state {
bool interrupts_enabled;
int crc_skip_count;
bool crc_enabled;
enum amdgpu_dm_pipe_crc_source crc_src;
bool freesync_timing_changed;
bool freesync_vrr_info_changed;
@@ -380,19 +381,6 @@ void dm_restore_drm_connector_state(struct drm_device *dev,
void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
struct edid *edid);
/* amdgpu_dm_crc.c */
#ifdef CONFIG_DEBUG_FS
int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name);
int amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc,
const char *src_name,
size_t *values_cnt);
void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc);
#else
#define amdgpu_dm_crtc_set_crc_source NULL
#define amdgpu_dm_crtc_verify_crc_source NULL
#define amdgpu_dm_crtc_handle_crc_irq(x)
#endif
#define MAX_COLOR_LUT_ENTRIES 4096
/* Legacy gamm LUT users such as X doesn't like large LUT sizes */
#define MAX_COLOR_LEGACY_LUT_ENTRIES 256